Recently, more and more emphasis is being placed on the maintenance of pre- and post-development runoff peaks from a specified design storm. The limit on post-development flood peaks requires in most cases that some manner of storage be provided. For new development this requirement is met by setting aside the appropriate amount of land for detention facilities, but in older developments that require relief from flooding, the aquisition of land for storage is expensive or impossible. Thus, it becomes necessary to use streets and yards to provide some of this storage. The object of the study described was to establish the type of storage to be provided. Generally, the study focused on the acceptability of using streets and yards to provide a portion of the storage.